FortiGate
FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
raureada
Staff
Staff
Article Id 326776
Description This article describes how to fix an issue where Application Name SSL blocks a website.
Scope FortiGate.
Solution

The forward logs will show that the site is blocked by UTM: specifically, the Application Name SSL.

 

Stephen_G_0-1722351674400.jpeg

 

In this example, an examination of Log & Report -> Security Events -> SSL revealed that the site is being blocked because of a certificate-probe-fail.

 

Stephen_G_1-1722351674409.jpeg

 

As a workaround, configure the following settings on the FortiGate:

 

config firewall ssl-ssh-profile

edit "name"

config ssl

set cert-probe-failure allow

end

The settings for the certificate probe may have to be changed. If using SD-WAN for example, this should be specified in the probe configuration.

 

tls.PNG

 

Follow this article for more info on how to troubleshoot the 'cert-probe-failure'.